Stopping mechanism for looms.



No. 726,589. PATBNTED APR. 28, 1903. E. S. STIMPSON.

STOPPING MECHANISM FOR LOOMS.

APPLIOATION FILED JAN. 16, 1903. N0 MODEL.

2 SHEETS-SHEET 1.

gfl msear Ewe 7%?" UNITED STATES PATENT CEEIGE.

EDWARD S. STIMPSON, OF HOPEDALE, MASSACHUSETTS, ASSIGNOR TO DRAPER COMPANY, OF HOPEDALE, MASSACHUSETTS, A CORPORA- TION O F MAINE.

STOPPING MECHANISM FOR LOOMS;

SPECIFICATION forming part of Letters Patent No. 726,589, dated April 28, 1903.

Application filedtlannary 16,

To all whom, it may concern:

Be it known that I, EDWARD S. STIMPSON, a citizen of the United States, and a resident of IIopedale,'coun ty'of Worcester, State of Massachusetts, have invented an Improvement in Stopping Mechanism for Looms, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts. i

This invention has for its object the production of novel, effective, and certain means for stopping a loom by or through the protector mechanism under all conditions. Itis common practice to provide the protectorshaft with two daggers to codperate with frogs at opposite sides of the loom, and one of such frogs has been arranged to effect the operation of the stopping means by releasing the shipper and setting the brake, the second frog tending only to equalize the strain when the loom bangs off. The two daggers are apt to be so set that one is slightly higher than the other, and when such is the case if the shuttle is not picked properly it may travel so slowly that it will just fail to lift the lower daggerof the two away from its frog. Should this failure to raise the dagger occur on the side of the loom away from the shipper, the dagger will strike the frog on that side, but will not release the shipper nor apply the brake in aloom so equipped, because the frog on the shipper side is the one having such function. The lay is apt to rebound, permitting continued motion of the shuttle, and the 100m will continue to run and may do so indefinitely, with the constant danger'of rebound of the lay in the manner described and straining or racking of the loom-frame. In my present invention both of the frogs are live oractive, so that the engagement of either one by its dagger operates through suitable means to release the shipper when the shut tle is not properly boxed. A When the shipper is so released, the power is thrown off and the loom will stop with or without the operation of suitable brake mechanism, and in the latter case the loom may turn over one or more times before coming to rest. I prefer,

1903. Serial No. 139,324. (No model.)

however, to em ploybrake mechanism, and in the present embodiment of my invention I have provided for setting the brake when the shipper is released by or through the operation of either frog. it is desirable to have a loom-brake on the side at which the power is applied; but many looms are now made with .the shipper and brake at one side and the belt-pulleys at the other side, because the live frog is at the shipper side and can also set the brake. With two live frogs, however, as in my present invention, the brake can be located at the power side, or two brakes may be employed, one at each side of the loom, and this latter arrangement is illustrated in the embodiment of my invention herein shown and described. By having two brakes and releasing the shipper by or through either frog the power is thrown off and braking action effected whichever frog is actuated through the protector mechanism, the stopping of the loom being thereby effected promptly and surely and obviating the faults hereinbefore noted.

The various novel features of niyinvention will be described in the subjoined specification, and particularly pointed out in the following claims.

Figure 1 is a right-hand side elevation of a portion of a loom with one embodiment of my invention applied thereto, the power side of the loom being illustrated. Fig. 2 is a top or plan View, centrally broken out, of the lower part of the loom, showing the two live frogs, the brakes at each side, and the means for releasing the shipper and setting the brake through either frog; and Fig. 3 is a detail of-some of the apparatus viewing the lefthand side of the loom, illustrating more clearly the means for releasing the shipper.

Referring to the drawings, the loom sides A A, the breast-beam A lay A the driving or crank shaft B providedwith means to transmit power thereto, herein shown as fast and loose pulleys P P, respectively, at'

A of the loom, and the arm a extended from the sleeveaud moving in aguideway a may be and are all of well-known construction and operate in a manner well known to those skilled in the art, the belt-shifter being connected by a rod d with an operating-lever d fulcrumed at d on a bracket 4, secured to the left-hand side of the loom. The forward end of the lever (Z projects across the path of the power-controller, herein shown as a shipper S, fulcrumed at 2 (see Fig. 3) and movable in the notch of the usual holding-plate N. In

the drawings the power controller or shipper is shown in stopping position with the power thrown off and the loom at rest. The frogs F and F are mounted, respectively, on the loom sides A and A and both are live frogsthat is to say, in accordance with my present invention either frog may be rendered active to automatically throw off the power when the shuttle is improperly boxed, and to this end the usual spring-controlled rock-shaft B of the protector mechanism is provided with daggers D and D to cooperate with the frogs F and F, respectively. The frog F of usual construction is provided with a bunterf,which is adapted to engage the arm 0 of a knock-off lever c c, fulcrumed at c 011 the loom side adjacent the shipper, the upturned arm 0 of said lever being adapted to engage and release the shipper from its holding-notch in the plate N when the frog F is moved forward by or through cooperation with its dagger D. When the shipper is released, the forward end of the lever 61 is swung to the left, viewing Fig. 2, and thereby the beltshifter is moved to shift the belt from the fast to the loose pulley. The forward end d of the lever 61 passes through a hole 5 (see dotted lines, Figs. 2 and 3) in the shipper, so that the movement of the latter swings the lever, as will be manifest. Of course the movement of the shipper into running position swings the lever 01 to throw on the power, and thereby start the loom. The operative movement of the frog F acts very directly, as will be obvious from the foregoing description, to release the shipper when the dagger D operates, as when the shuttle is improperly boxed.

In my present invention I have also provided for governing the power-controller or shipper when the frog F is operated by or through engagement with its dagger D. To this end the breast-beam is provided with bearings 10 for a rock-shaft 7%, extended across the loom from one to the other side and prevented from longitudinal movement by single collars 12, the said rock-shaft having secured to it at the right-hand end of the loom a depending arm h in the path of movement of a hunter f, secured to or forming a part of the frog F. At the opposite or lefthand end the rock-shaft is provided with an upturned and rearwardly-extended arm h, shown in Fig. 3 as bent over at its upper end at k to at times engage the arm 0 of the knock-off lever. When the frog F is moved forward by cooperation with its dagger, the

rock-shaft h is turned in the direction of the arrow 15, Fig. 3, by or through the engagement of the shuttle f and arm 72., and the arm h causes the knock-off lever to turn on its fulcrum 0 and release the shipper from its holding-notch.

It will thus be seen that no matter which dagger operates in the event of improper boxing of the shuttle the power controller or shipper will be operated to throw off the power and stop the loom, and this will be the case whether or not theloom be providedwith brake mechanism.

For some types of looms and kinds of work it is preferable to provide brake mechanism, and this is arranged to act upon the drivingshaft B when the power is thrown ofi.

Heretofore, so far as I am aware, the brake devicehas been applied to the driving-shaft at the side ofthe loom adjacent the shipper in order that the brake could be set by the operation of the frog at that side of the loom. When the power is applied to the drivingshaft at the opposite end thereof from the brake device, as is the casein many looms, it will be manifest that there is a tendency to twist or strain the shaft, as the brake is applied at one end, while the power is applied at the other end to such shaft.

In my present invention I have provided means for braking the driving-shaft at either end, according to the frog, which has operative movement imparted to it when the shuttle fails to box properly.

Referring to Fig. 2 and to a certain extent to Fig. 1, the driving-shaft B is shown as provided with two rotatable brake members or wheels B B at opposite sides of the loom, respectively, and brakeshoes B B cooperate with the said rotatable brake members. The brake-shoes are substantially alike, and by reference to Fig. 1 it will be seen that the shoe B is fulcrumed at 18 on the loom side A and is connected with the frog F by an actuating-rod 21, substantially as is shown in United States Patent No. 593,070. The brakeshoe B at the other side of the loom is similarly mounted on the loom side A and is connected by an actuating-rod 20 with the frog F. When the loom bangs oif by or through the operative movement of the frog F, the shoe B will be brought into cooperative engagement with the rotatable brake member B, and the braking effect is applied to the driving-shaft adjacent the end thereof to which the power is applied. If, on the other hand, the frog F is operative to move, the power will be thrown off and the drivingshaft will be braked by the cooperation of the shoe B with the rotating brake member B. If only one brake device is used, I prefer to locate it at the end of the driving-shaft to which the power is applied; but in order to secure the best results the double brake mechanism substantially such as herein shown and described is employed, so that no matter which frog is operated the driving-shaft will be braked when the power is thrown off.

So far as I am aware it is broadly new to employ two live frogs in a loom and to govern the application of the power by or through the operative movement of either frog, due to the actuation of the protector mechanism and Whether or not the loom be provided with brake mechanism. I believe it to be new also to provide the driving-shaft of a loom with brake mechanism at the end of the shaft to which the power is applied and to actuate the power controller or shipper from either side of the loom when the shuttle is improperly boxed. So far as I am aware it is also new to provide the driving-shaft of a loom with brake mechanism and a power-controller so constructed and arranged that the brake mechanism is made operative and the controller actuated to throw off the power from a frog at either side of the loom.

Accordingly my invention is not restricted to the precise construction and arrangement shown and described in the practical embodiment of my invention herein disclosed, as the same may be modified or rearranged in various particulars by those skilled in the art without departing from the spirit and scope of my invention.

Having fully described my invention, what Iclaim as new, and desire to secure by Letters Patent, is-

1. In a loom, protector mechanism, including a frog at each side of the loom, a shipper, and means to release the shipper by or through the operation of either frog.

2. In a loom, a power-controller, a frog at each side of the loom, and means governed by or through movement of either frog to operate the controller and throw off the power when the shuttle is improperly boxed.

3. In a loom, protector mechanism, including two daggers and a frog to cooperate with each when the shuttle is improperly boxed, a power-controller, and means actuated by or through cooperation of either frog with its dagger to operate the controller and throw 0d the power.

4. In a loom, protector mechanism, including a frog at each side of the loom, a shipper, a knock-off lever therefor, actuated directly by one of the frogs, and separate means to actuate said lever by or through movement of the other frog.

5. In a loom, a power controller, brake mechanism for the loom, a device at each side of the loom operative upon improper boxing of the shuttle, and means governed by or through the operation of either device to ac tuate the controller and throw off the power and effect the setting of the brake mechanism.

6. In a loom, protector mechanism, including a live frog at each side of the loom, and a dagger to cooperate with each frog when the shuttle fails to box, a shipper, releasing means a power-controller, independent devices lo-.

cated at opposite sides of the loom, and operative upon failure of the shuttle to box, and means governed by or through the operation of either device to operate the controller to throw off the power and to set the brake at the side on which the operating device is located.

9. A loom having in combination a drivingshaft provided with fast and loose pulleys, braking mechanism for said shaft adjacent the pulleys, a belt-shifter, and means operating automatically from either side of the loom upon failure of the shuttle to box to shift the belt and operate the brake mechanism.

10. In a loom, a driving-shaft having fast and loose pulleys, belt-shifting means, and a brake for the driving-shaft, located at each side of the loom, combined with a live frog at each side of the loom, and means actuated by operative movement of either frog to operate the belt-shifting means and set one of the brakes.

11. In a loom, a driving shaft, power-transmitting means therefor, a controller for said means, and brake mechanism for said shaft, combined with protector mechanism, including two frogs located at opposite sides of the loom,and means actuated by or through movement of either frog to operate the controller to throw off the power and to set the brake mechanism.

12. In a loom,a driving-shaft,brake devices therefor located at opposite sides of the loom, means to apply power to one end of the shaft, and a power-controller, combined with protector mechanism for the loom, including two live frogs located at opposite sides of the loom and operative upon failure of the shuttle to box, an operating connection between each frog and the nearer brake device, and means actuated by movement of either frog to operate the controller and thereby throw off the power.

13. A loom having in combination a driving-shaft provided with fast and loose pulleys, a belt-shifter, a brake device at each side of the loom, protector mechanism including a live frog at each side of the loom, an operating connection between each frog, and the nearer brake device, and means actuated by movement of either frog to operate the controller and through it move the belt-shifter from running to stopping position.

14. A loom having in combination a drivin g-shaft provided with fast and loose pulleys,

means, including a shipper anda belt-shifter, to shift a belt from one to the other pulley, a brake device for the shaft and an operativelyconnected live frog at each side of the loom, and means actuated by operative movement of either frog upon failure of the shuttle to box to release the shipper, such movement of afrogacting to set automaticallyits connected brake device. l

15. In a loom, protector mechanism, including a frog at each side of the loom, a shipper, a knock-off lever to cooperate with and release the shipper, one of the frogs operating said lever directly, and a rock-shaft having an arm to operatively move the knock-off lever when the rock-shaft is turned by or through operative movement of the other frog.

16. A loom having in combination a driving-shaft, means to apply power thereto, a power-controller, mechanism to brake the driving-shaft, a frog,,at each side of the loom, 

